SB 3-Bet vs HJ 4-Bet
HJ 4-bet to 19.8 bb. Jam or call with the top of your 3-bet range; fold the bluffs.
Hands at a glance
All-in (31% of hands)
Always: AA, AKs, KK. Sometimes: A5s (20%), AKo (60%), QQ (40%).
Call (17% of hands)
Sometimes: AQs (40%), AKo (40%), QQ (60%), JJ (50%), TT (20%).
Each square is a starting hand: pairs on the diagonal, suited hands above it, offsuit below. A square split in two colors is a mix: play it each way that often.
How to play it
You 3-bet a Hijack open from the Small Blind, and the Hijack 4-bets. Your 3-betting range here is 6% of all starting hands (the colored squares). Go all-in with 31% of it, call 17% and fold the other 53%.
Your 3-bet range here is wider and holds bluffs: suited aces and other hands that block the 4-bettor's strongest holdings. Those bluffs fold to the 4-bet, which is why so much of the range folds.
Facing the same 4-bet from the HJ: the CO folds 19%, the BTN folds 28%, the BB folds 25%.
Related charts: SB vs HJ Open, HJ Open vs SB 3-Bet, HJ Open Range.